Shore



Dec. 8 1925.

A. H. SYMONS SHORE Patented Dec. 8, 1925.

UNITED STATES ARTHUR I-I. SYMONS, OF CHICAGO, ILLNOIS.

SHORE.

Application iled August 16, 1924. Seriall No. 732,359.

To all whom t may concern:

Be it known that l, ARTHUR H. SYMoNs,

a citizen of the United States, residing at Chicago, in the county of Cook and State 5. of Illinois, have invented certain new and useful Improvements in Shores, of which the following is a specification.

The present invention relates to shores.

More particularly the present invention relates to shores such as are used in building construction, which shores should be adjustable as to height. Many objections apply to shores as now known and used. Some shores are very expensive, others are inconvenient in use, and others sag under load. Some shores, which depend upon a clamping action between relatively adjustable strut members, are open to the objection that they sometimes permit such slippage that serious accidents result.

An object of the present invention is to vprovide a shore which may be readily adjusted in height to approximately the point desired, after which the final adjustment may be made with a great degree of nicety.

A further object is to provide a shore which will enable a contractor Vor other user to utilize to advantage timbers which are commonly found in a contractors equipment.

A further object is to provide a shore employing two relatively adjustable strut members, which shore provides a positive locking action between said strut members.

A further object is to provide a shore involving two relatively adjustable strut members, together with a positive locking means therebetween, which shore is readily 40 manipulatable either for raising to its proper position or to withdraw from position.

A further object is to provide a shore involving a pair of struts adjustable relatively to one another, which struts will be positively locked against relative movement but which may be readily manipulated to lessen the height of the shore.

Further objects will appear as the description proceeds. l

Referring to the drawings- Figure 1 is a view in front elevation of a shore embodying the principles of the present invention;

Figure 2 is a view in side elevation of the structure shown in Figure 1;

Figure 3 is a rear view in elevation showing the structure shown in Figures 1 and 2;

Figure 4 is a longitudinal sectional view illustrating the locking action between the two struts of a shore embodying the principles of the present invention; and

Figure 5 is a view taken along the plane indicated by the arrows 5-5 of Figure 4f.

The numeral l indicates a structural steel member which may be `Tshaped in cross section. Said structural steel member 1 is elongated in 'shape and is provided with the web portion 2 and the flanges 3-3. member 1 may be provided with the foot portion 4, which may be riveted or otherwise secured tothe base of said member 1. The upper extremity of the member 1 has riveted thereto the strap 5, which is shaped to enclose and guide an elongated timber 6. Said member 1 constitutes one strut and the timber 6 constitutes another strut, said struts being adjustable relatively to one anj other in a manner which will be referred to hereinafter. f

Encircling the strut member 1 is the carrier member 7, shown as a casting, which casting is adapted to enclose certain locking mechanism for holding said casting 7 at any preferred point intermediate of the height of the member 1. The casting 7 is provided at its rear portion with the eX- tension 8, which forms an abutment for adjustably supporting the member 9, which is shaped to receive and support the timber strut 6. The extension 8 is provided with a hole extending therethrough in parallel relation with the strut 1, which hole receives the bolt 10, the extension 8 being so shaped as to hold the head of said bolt 10 against rotation. The member 9 is provided with the strap portion 11, which encloses the extension 8 of the casting 7, the lower face of the strap 11 being shaped to form an abutment for a nut 12, which nut 12 is carried by the bolt 10. The member 9 is held against movement in one direction transversely of the strut member 1 by abutting portions of the casting 7. To prevent transverse movement of the strap 11 in the other direction, the extension 8 of casting 7 may be provided with abutments 1555-13 overlapping thc two Said sides of the strap 11, which abutments 18 13 may be conveniently provided by means of a pin rigidly located within the rear portion of the extension 8 of casting 7. rlhe upper portion of the member 9 is shaped to provide a member 14 to receive and support the lower extremity of Jhe strut 6.

As noted above, the casting 7 is shaped to enclose the structural steel strut 1 together with locking mechanism for locking said casting against movement relative to said structural steel member 1. rlhe loclring mechanism referred to includes a member 15, preferably of U-shaped conformation, as shown in Figure 5, the legs of said member 15 embracing the web portion 2 of the strut member 1. Said legs are provided with shoulders 15-15 at the upper and lower extremities thereof to limit longitudinal movement of member 15 relative to the casting 7 along the length of the strut member 1. Said member 15 is provided with a protuberance 16 adapted to lodge within one or another of the notches 17-17 in the outstanding edge of the web 2 of the member 1. rl`he locking mechanism referred to also includes the wedge-shaped member 18, which may be provided with the shoulders 19-19 to limit the downward movement of said wedge 18. The wedge-shaped member 18 is provided with the foot portion 20, which should preferably be of sufficiently large dimensions that the wedge-shaped member 18 cannot be removed from within the casting 7 while said casting and the member 15 are in place` upon the strut 1. rllhe foot 2O provides a convenient portion which may be struck a blow or blows in an upward direction whereby to move the wedgeshapedmember 18. lt will be noted that due to the foot i at the bottom of strut 1 and the strap 5 at the top thereof, the casting 7 is prevented from being accidentally removed from said strut.

A mode of operation of the above described'embodiment of the present invention willbe clear without detailed description. 1t may be stated, however, that when the shore Yis to be put in place, as for example beneath a floor which is to be poured with concrete, the casting 7 may be readily adjusted to the approximate position desired. rEhe timber strut 3, which may be of the ordinary variety of timber commonly found in contractors equipments, will be located within the strap 5 and will be seated within the portion 14 of the member 9. rlhe top of the strut 6 may be located with great accuracy at the level desired by manipulation of the nut 12 on the bolt 10. lt will be clear that turning of the nut 12 in one direction will result in raising of the member 9 relative to the casting 7, whereas turning of the nut 12 in the opposite direction will result in the lowering of the member 9 relative to the casting 7. l`he casting 7 will be positively locked in position on the strut member 1 by reason of the fact that the protuberanee 1G on the member 15 has positively locking engagement with the web or" the member 1, said protuberance 16 being held in positive locking position by reason of the wedge-shaped member 18. lt has been found to be goed practice to limit the downward movement of the member 18 (as, for example, by means of shoulders 19-19) to an extent such that said wedge-shaped member 18 does not force the member 15 into tight engagement with the outstanding edge of the web 2 of the strut 1, though the invention is not limited to any particular range oi movement of member 18. lnasmueh as the casting 7 is held against movement by means of the locking action of the protuberance 16, it is not necessary to clamp the strut 1, and, if preferred, a certain s it amount of play may be permitted in the member 15 transversely of strut 1. lt will be understood, however, that if preferred, the wedge-shaped member 18 may force the member 1G into tight engagement with the outstanding edge of strut 1. ln any event, the action between the member 15 and strut 1 is a positive locking action, whereby reliance is not placed on the unreliable clamping action above referred to. The member 1 hangs with the protuberance 16 abutting against one et the abutment portions delining the notches 17-17. The member 18 constitutes a tapered shim, and the angularity between the member 1 and the structural steel member 2 depends upon the `position of member 18, that is to say,-when member 18 is in its low-rinost position, member 1 will have substantially right angular relationship with the length of the structural steel member 2. Y"flllien the membr 18 is raised from, said lowermost position so that a smaller por'ion of said member 18 is in holding relationshi) with the member 15, said member 1 will hang in an inclined position relative to the length of the structural steel member 2.

lllhen it is desired to release the shore the operator will strike the foot portion 2O of the member 18 a blow in an upward direction as the parts are viewed in Figure a of the drawing. .ln view of the wedgeshape of the member 18, the casting 7 will be relez ysed from the substantially horizonte` position illustrated in Figures 2 and t and said casting '7 will assume an inclined position, the angular-ity of which is indicated by the dotted line 21 in Figures 2 and 4. lt will be understood that said angularity is slightly exaggerated for the purpose of clarity of explanation. Due to the fact that the protuberance 16 Will still be held Within its semi-circular notch 17 there Will be no violentall of the movable parts. An operator may vary the position ot' the Wedge member 18 by the force or the number of the blows which he strikes against the foot portion 2O in an upward direction. When the Wedge member is moved so that its small end rides within the casting 7, the protuberance 16 of the member 15 may be released from its semi-circular notch 17. Crdinarily, however, when the shore is being released from its holding position the wedge member 18 Will be moved initially only to a position such that the casting 7 may assume an angular' position Without removal 0l' the protuberance 16 from its notch 17. The drop of the strut 6 Will be only a relatively small amount, so that danger due to a sudden dropping is avoided. This drop of strut 6 Will be sutlicient, hovvever, to release same from the floor or other member which it has been supporting. Further drop may be accomplished, of course, by manipulation of the nut 12. Semi-circular notches 17-17 have been illustrated in the drawing for the reason that notches of this contour may be cheaply made in quantity production. It Will be understood, of course, that the shape of the notch may be varied Widely Without departing from the scope of the present invention.

Though a preferred embodiment of the present invention has been described in detail, it Will be understood thatJ many modiications Will occur to those skilled in the art. It is intended to cover all such modiications that tall Within the scope of the appended claims.

That is claimed is:

1. An extensible shore, including a structural steel member and an elongated timber, means for receiving and supporting one extremity of said timber, a carrying member for said means, and adjustment means for varying the relative positions of said-carrying member and said iirst mentioned means, said carrying member being provided with mechanism having hanging relationship With said structural steel member and a tapered member having its smaller dimension loWermost for locking said carrying member in a predetermined angular position relative to said structural steel member.

Y 2. An extensible shore, including a structural steel member and an elongated timber, means for receiving and supporting one extremity of said timber, a carrying member for said means, and screw-threaded adjustment means for varying the relative positions of said carrying member and said first mentioned means, said carrying' member being provided With mechanism having hanging relationship With said structural steel member and a tapered member having its smaller dimension loWermost for deter mining the angularity of said carrying member relative to said structural steel member. y

An extensible shore, comprising an elongated member provided With a series of spaced abutment portions, a carrying member encircling said elongated member, and locking means for adjustably holding said carrying member on said elongated member, said locking means including a member having a part adapted to engage said abutment portions and a second member for holding saidv part in locking engagement with one of said abutment portions, said second member' comprising a tapered member having its'smaller dimension-lowermost for determining the angular position of said carrying member relative to said elongated member.

4. An extensible shore, comprising an elongated member provided With a series of spaced abutment portions, a carrying member encircling said elongated member, and locking means 'for adjustably holding said carrying member on said elongated member, said locking means including a member having a part adapted to engage said abutment portions and a second member for holding said part in locking engagement With one of said abutment portions, said last mentioned member comprising a tapered member having its smaller portion loWermost for biasing said abutment engaging part to its locking position.

5. An extensible shore, including an elongated member having a plurality of abutment portions spaced apart longitudinally of said elongated member, and a carriermember carried by said elongated member, means cooperating with said abutment portions for locking said carrier' member in adjusted position, and a strut supporting member supported by said carrier member, said strut supporting .member being capable of relatively ine Vadjustment With relation tok said carrier/member, said locking means including a tapered shim having its `smaller portion lovvermost for determining the angular position of said carrier member.

6. An extensible strut, comprising an elongated member having a plurality of abutment portions arranged longitudinally thereof, a carrier member supported by said elongated member, locking means cooperating with said carrier member forpositively locking said carrier member in any one of a plurality of positions on said elongated member, said lockingI means including two relatively movablemembers, one of Which relativelyimovable members has a portion having locking relation With the abutment portions of said elongated member, the

other of said relatively movable members comprising a tapered shim having its small portion lowermost to hold said first mentioned member in locking engagement with said elongated member.

7. An extensible strut, comprising an elongated member having a plurality of abutment portions arranged longitudinally thereof, a carrier member supported by said elongated member, locking means cooperating with said carrier member for positively locking said carrier member in any one of a plurality of positions on said elongated member, said locking means including two relatively movable members, one of which relatively movable members has a portion having locking relation with the abutment portions of said elongated member, the other oi' said relatively movable members comprising a tapered shim having its small portion lowermost to hold said Erst mentioned member in locking engagement with said elongated member, said last mentioned relatively movable member having a portion which may be readily struck to release the other of said relatively movable members from locking position.

8. An extensible strut, comprising an elongated member having a plurality of abutment portions arranged longitudinally thereof, a carrier member supported by said elongated member, locking means cooperating with said carrier member for positively locking said! carrier member in any one of a plurality of positions on said elongated member, said locking means including a tapered shim having its smaller portion lowermost for governing the angular position of said carrier member relative to said elongated member, and a strut supporting member carried by said carrier member, said strut supporting member being adjustable relative to said carrier, member.

9. -An extensible strut, comprising an elongated member having a plurality of abutment portions arranged longitudinally thereof, a carrier member supported by said elongated member, locking means cooperating with said carrier member for positively locking said carrier member in any one of a plurality of positions on said elongated member, said locking means including a tapered shim having its smaller portion lowermost for governing the angular position of said carrier member relative to said elongated member, and a strut supporting member carried by said carrier member, said strut supporting member and said carrier member having screw-threaded adjustment means cooperating therewith, whereby said strut supporting member may be adjusted with relatively great accuracy.

10. An extensible shore, comprising a pair of strut members and means for adjustably supporting said strut members relatively to one another, one of said strut members comprising a plain elongated timber, the other of said strut members comprising an elongated member having a plurality of abutment portions, said supporting means including a carrier member for supporting said timber, and locking means biased into locking engagement with said abutment portions, said locking means including a tapered shim having its smaller portion lowermost for controlling the angular position of said carrier member relative to said elongated member.

l1. An extensible shore, comprising a pair of strut members adjustable relatively to one another, one of said strut members comprising a plain timber, the other of said strut members comprising an elongated member having a plurality of abutment portions arranged along its length, a carrier member adjustably supported by said last mentioned strut member, supporting means for said timber adjustably mounted upon said carrier member, and a tapered shim cooperatively associated with said elongated member and said carrier member for controlling the angular relationship between said carrier member and said elongated member, said shim having its small portion lowermost.

12. An extensible shore, comprising a pair orp strut members adjustable relatively to one another, one of said strut, members comprising a plain timber, the other of said strut members comprising an elongated member having a plurality of abutment portions arranged along its length, a carrier member adjustably supported by said' last mentioned strut member, supporting means ior said timber adjustably mounted upon said carrier member, locking means cooperating with said carrier member, said locking means having a portion biased into locking engagement with said abutment portions, and a tapered shim having its small portion lowermost for producing said biasing action upon said locking means.

13. An extensible shore, comprising a pair of strut members, means for adjustably supporting said strut members relatively to one another, said supporting means inoluding a carrier member for supporting one of said strut members, said carrier member being swingingly mounted upon the other of said strut members, and a tapered shim having its small portion lowermost for controlling the angular position of saidcarrier member relative to said other strut member.

14. An extensible shore comprising a strut member having a plurality of abutment portions arranged along the length thereof, a carrier member, means operatively associated With said carrier member for supporting same from any one of said abutment portions, and a tapered shim having the dual function of holding said means in engagement with one of said abutment portions and of controlling the angular position of said carrier member.

l5. An extensible shore comprising an elongated member having a plurality oi abutment portions spaced along the length thereof, a carrier member loosely encircling said elongated member, a locking member having a shoulder for hanging upon any one of said abutment portions and having a shoulder for supporting said carrier member, and a tapered shim for controlling the position of said locking member, said locking member and said tapered shim being located Within the confines of said carrier member.

Signed at Chicago, Illinois, this 14th day of August, 1924.

ARTHUR H. SYMONS. 

